Grand Canyon climate

Grand Canyon Weather in August

NOAA 1991-2020 normals for Grand Canyon Np 2, 1 km from Grand Canyon

Average highs run from 84°F on August 1 to 80°F on August 31, and lows from 52°F to 48°F. Normal precipitation for the month is 2.19 in over about 10 wet days.

August day by day

The normal high and low for each date, and the record, in °F.

Normal daily high and low temperature at Grand Canyon, in °F, with the record for each date.20406080100151015202530
  • Normal low
  • Normal high
  • Record high
  • Record low

August at a glance

Average high
82°F
Average low
50°F
Precipitation
2.19 in
Record high
96°FAug 1, 2026
Record low
29°FAug 8, 2009
Chance of a freeze
0%
Days of 90°F or more
3.3
Daylight
13 h 57 min to 12 h 57 min
Cloud cover
48%
Humidity
43%
Dew point
46°F
Wind
6.3 mph

Every day of the month

A wet day has at least 0.01 inch of precipitation; snow means at least 0.1 inch of snowfall.

DateNormal highNormal lowRecord highRecord lowChance wetChance of snow
Aug 184°F52°F96°F 202642°F 199831%0%
Aug 284°F51°F94°F 202641°F 199831%0%
Aug 384°F51°F95°F 202637°F 202532%0%
Aug 483°F51°F94°F 202634°F 202532%0%
Aug 583°F51°F93°F 202338°F 199632%0%
Aug 683°F51°F94°F 202538°F 202032%0%
Aug 783°F51°F95°F 202536°F 202032%0%
Aug 883°F51°F93°F 202629°F 200932%0%
Aug 983°F51°F92°F 202633°F 200932%0%
Aug 1083°F51°F93°F 200335°F 200932%0%
Aug 1183°F51°F94°F 200338°F 200933%0%
Aug 1283°F50°F93°F 200237°F 199933%0%
Aug 1383°F50°F93°F 200238°F 201032%0%
Aug 1482°F50°F93°F 200240°F 201032%0%
Aug 1582°F50°F96°F 202040°F 200932%0%
Aug 1682°F50°F96°F 202032°F 200932%0%
Aug 1782°F50°F95°F 202036°F 200932%0%
Aug 1882°F50°F95°F 202034°F 200932%0%
Aug 1982°F50°F96°F 202035°F 200932%0%
Aug 2082°F49°F94°F 202038°F 200931%0%
Aug 2182°F49°F93°F 200940°F 200231%0%
Aug 2282°F49°F91°F 201140°F 200230%0%
Aug 2381°F49°F90°F 199838°F 200230%0%
Aug 2481°F49°F90°F 202031°F 200230%0%
Aug 2581°F49°F90°F 202034°F 200229%0%
Aug 2681°F49°F92°F 202035°F 200229%0%
Aug 2781°F48°F92°F 201134°F 200228%0%
Aug 2881°F48°F90°F 199841°F 200228%0%
Aug 2981°F48°F92°F 202339°F 201027%0%
Aug 3080°F48°F90°F 202333°F 201027%0%
Aug 3180°F48°F92°F 201934°F 201027%0%

Chance of rain

The chance of at least 0.01 inch of precipitation on each date at Grand Canyon, in percent, and of at least 0.1 inch of snowfall.0102030401102030
  • Chance of a wet day
  • Chance of snowfall

Sunrise and sunset

Times for 2026, local time (MST).

August 1
sunrise 5:36 AM, sunset 7:33 PM
August 31
sunrise 6:00 AM, sunset 6:57 PM

Every day of August: sun and moon

Other months

Sources

Normals: NOAA NCEI U.S. Climate Normals, 1991-2020, station USC00023596 (Grand Canyon Np 2), public domain. Records: NOAA GHCN-Daily, station USW00003195, every year on file, quality-flagged values removed. Cloud, humidity, wind and sunshine: NASA POWER (MERRA-2, CERES and GEWEX SRB), 1991-2020. The data was obtained from the National Aeronautics and Space Administration (NASA) Langley Research Center's Prediction Of Worldwide Energy Resources (POWER) project funded through the NASA Earth Science Division: POWER Daily API v2, accessed 2026-09-24. Sun and moon: computed with the NOAA solar equations and Meeus.